Early Day Motions (EDMs) are formal motions submitted for debate in the House of Commons. However, very few EDMs are actually debated. Instead, they are used for reasons such as publicising the views of individual MPs, drawing attention to specific events or campaigns, and demonstrating the extent of parliamentary support for a particular cause or point of view.
Further information on this subject can be found from the following links:
About Parliament - Early Day Motions
Early Day Motions Database